Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8978725 | Bicycle wheel rim structure | Kazuki Koshiyama, Hiroshi Fujita | 2015-03-17 |
| 7578563 | Reinforced bicycle rim | Tsutomu Muraoka, Shinpei Okajima | 2009-08-25 |
| 7464994 | Bicycle rim reinforced with a continuously extending resin material | Shinpei Okajima, Tsutomu Muraoka | 2008-12-16 |
| 7377595 | Bicycle rim | Shinpei Okajima, Tsutomu Muraoka | 2008-05-27 |
| 7350877 | Bicycle rim | Tsutomu Muraoka | 2008-04-01 |